水胶比和再生粗骨料取代率对再生混凝土强度影响的试验研究  

Study on Impacts of Water Cement Ratio and RCA Replacement Ratio on Recycled Concrete Strength

作　　者：袁继峰[1] 王卫[1] 陆永涛[1] 

机构地区：[1]南京理工大学泰州科技学院土木工程学院,江苏泰州225300

出　　处：《重庆建筑》2014年第10期53-55,共3页Chongqing Architecture

摘　　要：为了更好地掌握再生混凝土强度变化规律,利用废弃混凝土试块作为再生粗骨料原料,依据水胶比和再生粗骨料取代率不同配制了15组共计75个再生混凝土试块进行试验对比分析。试验结果表明:再生混凝土破坏过程和破坏形态与普通混凝土基本一致,但相对于普通混凝土来说,再生混凝土的基本力学性能较差。再生混凝土抗压强度随水胶比增大而降低,再生粗骨料取代率的增加会对再生混凝土的基本力学性能产生不利影响。To better master the changing law of recycled concrete strength, some abandoned concrete blocks are used as RCA to produce 75 recycled con- crete blocks in 15 groups with different water cement ratios and RCA replacement ratios for study and analysis. The study shows that recycled concrete shares the same failure process and failure form with ordinary concrete, but has poor basic mechanical properties compared with ordinary concrete. The compressive strength of recycled concrete weakens with the increase of water cement ratio. Besides.the increase of RCA replacement ratio has negative impact on the basic mechanical properties of recycled concrete.

关 键 词：再生混凝土 抗压强度 水胶比 再生粗骨料取代率 

分 类 号：TU528[建筑科学—建筑技术科学]